void vg_prepare_blend_surface_from_mask(struct vg_context *ctx)
{
struct pipe_surface *dest_surface = NULL;
struct pipe_context *pipe = ctx->pipe;
struct st_framebuffer *stfb = ctx->draw_buffer;
struct st_renderbuffer *strb = stfb->strb;
vg_validate_state(ctx);
/* first finish all pending rendering */
vgFinish();
dest_surface = pipe->screen->get_tex_surface(pipe->screen,
stfb->blend_texture_view->texture,
0, 0, 0,
PIPE_BIND_RENDER_TARGET);
/* flip it, because we want to use it as a sampler */
util_blit_pixels_tex(ctx->blit,
stfb->alpha_mask_view,
0, strb->height,
strb->width, 0,
dest_surface,
0, 0,
strb->width, strb->height,
0.0, PIPE_TEX_MIPFILTER_NEAREST);
/* make sure it's complete */
vgFinish();
if (dest_surface)
pipe_surface_reference(&dest_surface, NULL);
}
void vg_prepare_blend_surface(struct vg_context *ctx)
{
struct pipe_surface *dest_surface = NULL;
struct pipe_context *pipe = ctx->pipe;
struct pipe_sampler_view *view;
struct pipe_sampler_view view_templ;
struct st_framebuffer *stfb = ctx->draw_buffer;
struct st_renderbuffer *strb = stfb->strb;
/* first finish all pending rendering */
vgFinish();
u_sampler_view_default_template(&view_templ, strb->texture, strb->texture->format);
view = pipe->create_sampler_view(pipe, strb->texture, &view_templ);
dest_surface = pipe->screen->get_tex_surface(pipe->screen,
stfb->blend_texture_view->texture,
0, 0, 0,
PIPE_BIND_RENDER_TARGET);
/* flip it, because we want to use it as a sampler */
util_blit_pixels_tex(ctx->blit,
view,
0, strb->height,
strb->width, 0,
dest_surface,
0, 0,
strb->width, strb->height,
0.0, PIPE_TEX_MIPFILTER_NEAREST);
if (dest_surface)
pipe_surface_reference(&dest_surface, NULL);
/* make sure it's complete */
vgFinish();
pipe_sampler_view_reference(&view, NULL);
}
static void vg_prepare_blend_texture(struct vg_context *ctx,
struct pipe_sampler_view *src)
{
struct st_framebuffer *stfb = ctx->draw_buffer;
struct pipe_surface *surf;
struct pipe_surface surf_tmpl;
vg_context_update_blend_texture_view(ctx, stfb->width, stfb->height);
memset(&surf_tmpl, 0, sizeof(surf_tmpl));
u_surface_default_template(&surf_tmpl, stfb->blend_texture_view->texture,
PIPE_BIND_RENDER_TARGET);
surf = ctx->pipe->create_surface(ctx->pipe,
stfb->blend_texture_view->texture,
&surf_tmpl);
if (surf) {
util_blit_pixels_tex(ctx->blit,
src, 0, 0, stfb->width, stfb->height,
surf, 0, 0, stfb->width, stfb->height,
0.0, PIPE_TEX_MIPFILTER_NEAREST);
pipe_surface_reference(&surf, NULL);
}
}
/**
* glGetTexImage() helper: decompress a compressed texture by rendering
* a textured quad. Store the results in the user's buffer.
*/
static void
decompress_with_blit(struct gl_context * ctx,
GLenum format, GLenum type, GLvoid *pixels,
struct gl_texture_image *texImage)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct st_texture_image *stImage = st_texture_image(texImage);
struct st_texture_object *stObj = st_texture_object(texImage->TexObject);
struct pipe_sampler_view *src_view;
const GLuint width = texImage->Width;
const GLuint height = texImage->Height;
struct pipe_surface *dst_surface;
struct pipe_resource *dst_texture;
struct pipe_transfer *tex_xfer;
unsigned bind = (PIPE_BIND_RENDER_TARGET | /* util_blit may choose to render */
PIPE_BIND_TRANSFER_READ);
/* create temp / dest surface */
if (!util_create_rgba_surface(pipe, width, height, bind,
&dst_texture, &dst_surface)) {
_mesa_problem(ctx, "util_create_rgba_surface() failed "
"in decompress_with_blit()");
return;
}
/* Disable conditional rendering. */
if (st->render_condition) {
pipe->render_condition(pipe, NULL, 0);
}
/* Create sampler view that limits fetches to the source mipmap level */
{
struct pipe_sampler_view sv_temp;
u_sampler_view_default_template(&sv_temp, stObj->pt, stObj->pt->format);
sv_temp.format = util_format_linear(sv_temp.format);
sv_temp.u.tex.first_level =
sv_temp.u.tex.last_level = texImage->Level;
src_view = pipe->create_sampler_view(pipe, stObj->pt, &sv_temp);
if (!src_view) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
return;
}
}
/* blit/render/decompress */
util_blit_pixels_tex(st->blit,
src_view, /* pipe_resource (src) */
0, 0, /* src x0, y0 */
width, height, /* src x1, y1 */
dst_surface, /* pipe_surface (dst) */
0, 0, /* dst x0, y0 */
width, height, /* dst x1, y1 */
0.0, /* z */
PIPE_TEX_MIPFILTER_NEAREST);
/* Restore conditional rendering state. */
if (st->render_condition) {
pipe->render_condition(pipe, st->render_condition,
st->condition_mode);
}
/* map the dst_surface so we can read from it */
tex_xfer = pipe_get_transfer(pipe,
dst_texture, 0, 0,
PIPE_TRANSFER_READ,
0, 0, width, height);
pixels = _mesa_map_pbo_dest(ctx, &ctx->Pack, pixels);
/* copy/pack data into user buffer */
if (_mesa_format_matches_format_and_type(stImage->base.TexFormat,
format, type,
ctx->Pack.SwapBytes)) {
/* memcpy */
const uint bytesPerRow = width * util_format_get_blocksize(stImage->pt->format);
ubyte *map = pipe_transfer_map(pipe, tex_xfer);
GLuint row;
for (row = 0; row < height; row++) {
GLvoid *dest = _mesa_image_address2d(&ctx->Pack, pixels, width,
height, format, type, row, 0);
memcpy(dest, map, bytesPerRow);
map += tex_xfer->stride;
}
pipe_transfer_unmap(pipe, tex_xfer);
}
else {
/* format translation via floats */
GLuint row;
enum pipe_format pformat = util_format_linear(dst_texture->format);
GLfloat *rgba;
rgba = (GLfloat *) malloc(width * 4 * sizeof(GLfloat));
if (!rgba) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage()");
goto end;
}
for (row = 0; row < height; row++) {
const GLbitfield transferOps = 0x0; /* bypassed for glGetTexImage() */
GLvoid *dest = _mesa_image_address2d(&ctx->Pack, pixels, width,
height, format, type, row, 0);
if (ST_DEBUG & DEBUG_FALLBACK)
debug_printf("%s: fallback format translation\n", __FUNCTION__);
/* get float[4] rgba row from surface */
pipe_get_tile_rgba_format(pipe, tex_xfer, 0, row, width, 1,
pformat, rgba);
_mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba, format,
type, dest, &ctx->Pack, transferOps);
}
free(rgba);
}
end:
_mesa_unmap_pbo_dest(ctx, &ctx->Pack);
pipe->transfer_destroy(pipe, tex_xfer);
/* destroy the temp / dest surface */
util_destroy_rgba_surface(dst_texture, dst_surface);
pipe_sampler_view_release(pipe, &src_view);
}